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NIStune Type 1 Hardware Installation Page 7 of 7
1. Removing the ECU
Locate the ECU in vehicle to be modified. The location of the factory ECU can be identified from the
vehicle service manual. The picture below shows the location of the ECU in the LHS passenger foot well of
an R31 Skyline.
Disconnect your negative battery terminal prior to removing the ECU. Remove the screws holding in the
mounting bracket. Then slide the ECU out from the kick panel and unplug the connectors.
Below is a picture of the ECU with the mounting bracket removed. If sending the ECU away for NIStune
board installation, please send without the mounting bracket.